1# Copyright (C) 2012 Red Hat 2# see file 'COPYING' for use and warranty information 3# 4# policygentool is a tool for the initial generation of SELinux policy 5# 6# This program is free software; you can redistribute it and/or 7# modify it under the terms of the GNU General Public License as 8# published by the Free Software Foundation; either version 2 of 9# the License, or (at your option) any later version. 10# 11# This program is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14# GNU General Public License for more details. 15# 16# You should have received a copy of the GNU General Public License 17# along with this program; if not, write to the Free Software 18# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 19# 02111-1307 USA 20# 21# 22import re 23import sys 24import sepolicy 25ADMIN_TRANSITION_INTERFACE = "_admin$" 26USER_TRANSITION_INTERFACE = "_role$" 27 28__all__ = ['get_all_interfaces', 'get_interfaces_from_xml', 'get_admin', 'get_user', 'get_interface_dict', 'get_interface_format_text', 'get_interface_compile_format_text', 'get_xml_file', 'interface_compile_test'] 29 30## 31## I18N 32## 33PROGNAME = "policycoreutils" 34try: 35 import gettext 36 kwargs = {} 37 if sys.version_info < (3,): 38 kwargs['unicode'] = True 39 gettext.install(PROGNAME, 40 localedir="/usr/share/locale", 41 codeset='utf-8', 42 **kwargs) 43except: 44 try: 45 import builtins 46 builtins.__dict__['_'] = str 47 except ImportError: 48 import __builtin__ 49 __builtin__.__dict__['_'] = unicode 50 51 52def get_interfaces_from_xml(path): 53 """ Get all interfaces from given xml file""" 54 interfaces_list = [] 55 idict = get_interface_dict(path) 56 for k in idict.keys(): 57 interfaces_list.append(k) 58 return interfaces_list 59 60 61def get_all_interfaces(path=""): 62 from sepolicy import get_methods 63 all_interfaces = [] 64 if not path: 65 all_interfaces = get_methods() 66 else: 67 xml_path = get_xml_file(path) 68 all_interfaces = get_interfaces_from_xml(xml_path) 69 70 return all_interfaces 71 72 73def get_admin(path=""): 74 """ Get all domains with an admin interface from installed policy.""" 75 """ If xml_path is specified, func returns an admin interface from specified xml file""" 76 admin_list = [] 77 if path: 78 try: 79 xml_path = get_xml_file(path) 80 idict = get_interface_dict(xml_path) 81 for k in idict.keys(): 82 if k.endswith("_admin"): 83 admin_list.append(k) 84 except IOError as e: 85 sys.stderr.write("%s: %s\n" % (e.__class__.__name__, str(e))) 86 sys.exit(1) 87 else: 88 for i in sepolicy.get_methods(): 89 if i.endswith("_admin"): 90 admin_list.append(i.split("_admin")[0]) 91 92 return admin_list 93 94 95def get_user(path=""): 96 """ Get all domains with SELinux user role interface""" 97 """ If xml_path is specified, func returns an user role interface from specified xml file""" 98 trans_list = [] 99 if path: 100 try: 101 xml_path = get_xml_file(path) 102 idict = get_interface_dict(xml_path) 103 for k in idict.keys(): 104 if k.endswith("_role"): 105 if (("%s_exec_t" % k[:-5]) in sepolicy.get_all_types()): 106 trans_list.append(k) 107 except IOError as e: 108 sys.stderr.write("%s: %s\n" % (e.__class__.__name__, str(e))) 109 sys.exit(1) 110 else: 111 for i in sepolicy.get_methods(): 112 m = re.findall("(.*)%s" % USER_TRANSITION_INTERFACE, i) 113 if len(m) > 0: 114 if "%s_exec_t" % m[0] in sepolicy.get_all_types(): 115 trans_list.append(m[0]) 116 117 return trans_list 118 119interface_dict = None 120 121 122def get_interface_dict(path="/usr/share/selinux/devel/policy.xml"): 123 global interface_dict 124 import os 125 import xml.etree.ElementTree 126 if interface_dict: 127 return interface_dict 128 129 interface_dict = {} 130 param_list = [] 131 132 xml_path = """<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?> 133<policy> 134<layer name="admin"> 135""" 136 xml_path += path 137 xml_path += """ 138</layer> 139</policy> 140""" 141 142 try: 143 if os.path.isfile(path): 144 tree = xml.etree.ElementTree.parse(path) 145 else: 146 tree = xml.etree.ElementTree.fromstring(xml_path) 147 for l in tree.findall("layer"): 148 for m in l.findall("module"): 149 for i in m.getiterator('interface'): 150 for e in i.findall("param"): 151 param_list.append(e.get('name')) 152 interface_dict[(i.get("name"))] = [param_list, (i.find('summary').text), "interface"] 153 param_list = [] 154 for i in m.getiterator('template'): 155 for e in i.findall("param"): 156 param_list.append(e.get('name')) 157 interface_dict[(i.get("name"))] = [param_list, (i.find('summary').text), "template"] 158 param_list = [] 159 except IOError: 160 pass 161 return interface_dict 162 163 164def get_interface_format_text(interface, path="/usr/share/selinux/devel/policy.xml"): 165 idict = get_interface_dict(path) 166 interface_text = "%s(%s) %s" % (interface, ", ".join(idict[interface][0]), " ".join(idict[interface][1].split("\n"))) 167 168 return interface_text 169 170 171def get_interface_compile_format_text(interfaces_dict, interface): 172 from .templates import test_module 173 param_tmp = [] 174 for i in interfaces_dict[interface][0]: 175 param_tmp.append(test_module.dict_values[i]) 176 interface_text = "%s(%s)\n" % (interface, ", ".join(param_tmp)) 177 178 return interface_text 179 180 181def generate_compile_te(interface, idict, name="compiletest"): 182 from .templates import test_module 183 te = "" 184 te += re.sub("TEMPLATETYPE", name, test_module.te_test_module) 185 te += get_interface_compile_format_text(idict, interface) 186 187 return te 188 189 190def get_xml_file(if_file): 191 """ Returns xml format of interfaces for given .if policy file""" 192 import os 193 try: 194 from commands import getstatusoutput 195 except ImportError: 196 from subprocess import getstatusoutput 197 basedir = os.path.dirname(if_file) + "/" 198 filename = os.path.basename(if_file).split(".")[0] 199 rc, output = getstatusoutput("python /usr/share/selinux/devel/include/support/segenxml.py -w -m %s" % basedir + filename) 200 if rc != 0: 201 sys.stderr.write("\n Could not proceed selected interface file.\n") 202 sys.stderr.write("\n%s" % output) 203 sys.exit(1) 204 else: 205 return output 206 207 208def interface_compile_test(interface, path="/usr/share/selinux/devel/policy.xml"): 209 exclude_interfaces = ["userdom", "kernel", "corenet", "files", "dev"] 210 exclude_interface_type = ["template"] 211 212 try: 213 from commands import getstatusoutput 214 except ImportError: 215 from subprocess import getstatusoutput 216 import os 217 policy_files = {'pp': "compiletest.pp", 'te': "compiletest.te", 'fc': "compiletest.fc", 'if': "compiletest.if"} 218 idict = get_interface_dict(path) 219 220 if not (interface.split("_")[0] in exclude_interfaces or idict[interface][2] in exclude_interface_type): 221 print(_("Compiling %s interface") % interface) 222 try: 223 fd = open(policy_files['te'], "w") 224 fd.write(generate_compile_te(interface, idict)) 225 fd.close() 226 rc, output = getstatusoutput("make -f /usr/share/selinux/devel/Makefile %s" % policy_files['pp']) 227 if rc != 0: 228 sys.stderr.write(output) 229 sys.stderr.write(_("\nCompile test for %s failed.\n") % interface) 230 231 except EnvironmentError as e: 232 sys.stderr.write(_("\nCompile test for %s has not run. %s\n") % (interface, e)) 233 for v in policy_files.values(): 234 if os.path.exists(v): 235 os.remove(v) 236 237 else: 238 sys.stderr.write(_("\nCompiling of %s interface is not supported.") % interface) 239